he grew up in, i believe, san francisco. he used to watch the railyards. he would watch how the trains work. he hacked in to the san francisco train system and said i have a better way of doing that. they hired him. while he was there, he developed different ways of looking at things, social media, different way of how traffic works. he is such an interesting guy. you know what his next project is? he wants to become mayor of new york city. he thinks new york city, the whole mass transit system is messed up. he can fix it. >> dana: will he let us drink big sodas? i'm for that. >> kimberly: greg, you have a love/hate relationship with twitter. >> greg: it's like our relationship. on one hand it serves a valuable service to give 280,000 lost souls to focus on, picture and tweet of your dog. it's conflict between putting out and taking in. if you want to go public with your thoughts you allow influx in your life you didn't have before. you find yourself looking at it when you should probably be talking to your wife. doing something with humanity. you also rea